Cyphacanthus

{{Short description|Genus of flowering plants}}

{{Speciesbox

|image =

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|genus = Cyphacanthus

|parent_authority = Leonard (1953)

|species = atopus

|authority = Leonard (1953)

}}

Cyphacanthus atopus is a species of flowering plant belonging to the family Acanthaceae. It is a shrub endemic to Colombia. It is known from the Magdalena River Valley in Boyacá Department, at 762 meters elevation.[https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:75247-2 Cyphacanthus atopus Leonard]. Plants of the World Online. Retrieved 29 January 2024.{{cite web |title=Cyphacanthus Leonard {{!}} Plants of the World Online {{!}} Kew Science |url=https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:297710-2 |website=Plants of the World Online |access-date=21 March 2021 |language=en}}